SOLUTION: A circular cobblestone walk that surrounds a round fountain extends 5 ft from the fountain. What is the area (to the nearest whole number) of the walk if the diameter of the founta

Question 298816: A circular cobblestone walk that surrounds a round fountain extends 5 ft from the fountain. What is the area (to the nearest whole number) of the walk if the diameter of the fountain is 12.5 ft?
Answer by Stitch(470) (Show Source): You can put this solution on YOUR website!
Area of a circle =
To find the area of just the walk around the fountain, you need to find the total area of the larger cirlce and then subtract the area of the inner circular fountain.
Diameter of the inner circle = 12.5ft
The radius is half of the diameter, so the radius of the inner circle is 6.25ft
Area of the inner circle =
Now the radius of the larger circle is the 6.25ft + 5ft = 11.25ft
Area of the outter circle =
The surface are of just the walk =
The surface are of just the walk =
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